I beleive you definitely can, I have experienced very very intense feelings of love in dreams.
I dreamed once that I spent the whole night with a girl that I barely knew(in real life), nothing happening in the dream just talking,, it was very very strange and I woke up still feeling a small bit the same, but within the hour all those feelings were completely gone, and she was back to being just a kind of a good looking girl I sort of know.
Another time, I had a very strange dream that my nephew in real life was my son in the dream, and I had very strong parental caring feelings towards him, I have no kids but this feeling was intense. Once again, I woke up and within the hour all those feelings were completely gone.
I find dreams fascinating, and almost therapeutic, if I have a long long dream about something I tend to wake up slightly refreshed.
I have also experience love in a dream with a girl I was going out with at the time and was in was in love with at the time.